Kettle.



RALPH W. GLENN, OF FRUITVALE, CALIFORNIA.

KETTLE.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed October 24,1905. Serial No. 284,207.

To Cl/ZZ whom, it may concern.-

Be it known that I, RALPH l/V. GLENN, a citizen of the United States, residing at Fruitvale, in the county of Alameda and State of California, have invented new and useful Improvements in Kettles, of which the following is a specification.

The invention relates to an improvement in kettles, and particularly to a means for increasing the efliciency of the kettle.

The main object of the present invention is the production of a kettle constructed and arranged for increasing its heating capacity by providing an increased surface to be effected by the heating medium, said increased surface being arranged to discharge its conductive heat wholly within the liquid in the kettle, thereby securing the maximum effect from said additional heating-surface.

The invention will be described in the following specification, reference being had particularly to the accompanying drawings, in which- Figure 1 is a vertical central section through the kettle, parts being shown in elevation. Fig. 2 is a transverse section on line 2 2 of Fig. 1.

Referring to the drawings, 1 is a kettle, which with the exception of the details noted may be of any usual or preferred construction, as such forms no material part of the present invention. The bottom 2 of the kettle is formed, preferably concentric with and near the edge, with a groove or depression 3, approximately semicircular in cross-section for the greater portion of its length and extending wholly upward above the bottom of the kettle. At approximately right-angled diametrically opposite points the groove 3 is in open communication with the upwardlyextending nipples 4., said groove adjacent said nipples having depending or gradually converging into the nipples, it being understood that in the preferred construction the nipples 4 are integral with the wall of the groove, being formed by suitable stamping of the kettle-bottom in an obvious manner.

On reference to Fig. 2 it will be noted that the diametrically opposite nipples are each connected with a pipe-section 5 and that the pipe-sections extend transversely of the kettle in parallel relation to each other, thereby providing for pipes extending in pairs at right angles to each other and in parallel relation. As the nipples connected to each pair of pipes are diametrically opposite each other, it is evident that the pipes leading from said nipples extend in-reverse direction across the kettle. By preference these pipes extend upward from the nipples in curved formation, as at 6, and then extend downwardly at a slight incline toward the opposite side of the kettle, their open or mouth end 7 being secured in the kettle-wall. By this construction the heat is directed from the groove 3 upward and through the pipes 5, escaping through the mouths 7 thereof. As the pipes are located wholly within the liquid in the kettle, it is evident that the heat generated by the passage of the hot air through said pipes will be conducted directly to the liquid, thereby materially increasing the efliciency of the kettle.

In the preferred arrangement described the pipes 5 are arranged in the form of a cross at right angles to each other, whereby the heat is eventually distributed throughout the body of the liquid, though it is to be understood that so far as the present invention is concerned any number of pipes 5 may be used, the only limitation being that each of said pipes should communicate with the groove formed in the kettle-bottom and terminate in an open mouth leading beyond the kettle-wall. By this construction the heatingmedium ordinarily escaping around the sides of the kettle and beneath its bottom without materially affecting the liquid is utilized to the maximum extent to heat the liquid. By forming the bends 6 in the pipe 5 and the downward inclines leading to the mouths 7, the heating medium in escaping through the pipes is directed contrary to its natural rising course, thereby in a measure retarding its movement and increasing its effect upon the contained liquid.

Having thus described the invention, what is claimed as new is 1. A tea-kettle formed with a plurality of interior pipes opening beyond the kettlewalls, each of said pipes having a portion projected in approximately parallel relation to the kettle-wall and a portion having a downward incline within the kettle.

2. In a tea-kettle a series of pipes supported interior of the kettle and opening beyond its walls, each of said pipes extending at right angles from the kettle'bottom for a portion of its length and being inclined downward from the upper end of said extended portion.

3. A tea-kettle formed with a groove in nipples in communication with said groove and extending within the kettle, and pipesections connected to said nipples and terminating in mouths opening beyond the kettle-wall, each of said pipes extending upwardly from said nipples for a portion of their lengths and inclined downwardly from said extended portion, whereby to retard the heating medium passing therethrough.

In testimony whereof I affix my signature in presence of two witnesses.

RALPH W. GLENN.

Witnesses:

W. L. GLENN, HENRY P. TRIOOU; 

